<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
</head>

<body>
    <div :style="{color:activeColor,fontSize:size+'px'}">内联style样式修改</div>
    <script>
        new Vue({
            data() {
                return {
                    activeColor: "blue",
                    size: 55
                }
            }
        });
    </script>
</body>

</html>